摘要： 由于IP组播并未取得预期的成功,研究人员又提出了由终端主机来代替路由器实现群组通信功能。针对实时多媒体传输的特点以及目前单组播网络混合存在的现状,该文提出了一种新的支持实时多媒体传输的应用层组播系统。在系统中,多个网关形成一层覆盖网,由网关完成数据的复制、分发以及组的成员管理,从而在应用层实现了群组通信的功能。

关键词: 应用层组播, 实时多媒体, 网关, Overlaymulticast

Abstract: Due to unsuccessful experiment about IP multicasting system, researchers have proposed a new approach that is to realize the group communication function by using end system which substitutes router. Focusing on the character of real-time multimedia transportation and also the mixture situation of unicast and multicast, this paper presents a multicast system for real-time multimedia transportation in application level. In the system, several gateways composite an overlay network, and each gateway takes charge of duplicating and dispatching data packets and group member management.

中图分类号: 

• TP393